2tweak somethingto make slight changes to a machine, system, etc. to improve itI think you'll have to tweak these figures a little before you show them to the boss.

Word Originearly 17th cent.: probably an alteration of dialect twick‘pull sharply’; related to twitch.Extra examplesI think you’ll have to tweak these figures a little before you show them to the boss.Kath tweaked at the hem of her skirt.Tom tweaked the reins lightly.